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Christophe Bedard 2019-06-26 11:16:51 +02:00
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tracetools/README.md
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# tracetools
## Building
If tracing is not enabled when building, or if LTTng is not found, then this package will not do anything.
To enable tracing:
1. Install [LTTng](https://lttng.org/docs/v2.10/#doc-ubuntu):
```
$ sudo apt-get install lttng-tools lttng-modules-dkms liblttng-ust-dev
```
2. Build with the `WITH_LTTNG` flag:
```
$ colcon build --cmake-args " -DWITH_LTTNG=ON"
```
3. Check if tracing is enabled (after sourcing):
```
$ ros2 run tracetools tracetools_status
```
## Tracing
By default, the steps above will not lead to trace data being generated, and thus they will have no impact on execution.
LTTng has to be enabled: TODO mention scripts